Quora says it believes that about 100 million users were affected by the breach. The question-and-answer site doesn’t know how it was hacked. Quora CEO Adam D’Angelo: “We are working rapidly to investigate the situation further” Quora users will have to change their passwords, which is a best practice for any user of any site that’s been breached. The company says it is paying for the information security practices, processes, technology and personnel that it should have already had in place, if it were to have done so.”]
Source: https://www.cuinfosecurity.com/blogs/question-did-quora-hack-expose-100-million-users-p-2690